- Definitions|1
- Thesaurus|312
- Abbreviations|0
127 entries under noun topic. ×
| difficulty(discipline, harshness, strictness, laboriousness) | |
| discipline(severity, strictness) | |
| ghastliness | |
| gruesomeness | |
| intensity | |
| keenness | |
| laboriousness(difficulty, strenuousness) | |
| oppressiveness | |
| refinement(distinction, precision, rigor) | |
| ruthlessness(harshness, sternness) | |
| subtlety(distinction, refinement, precision, rigor) | |
| abruptness | |
| astringency | |
| authoritarianism | |
| bleakness | |
| bluntness | |
| briskness | |
| brusqueness | |
| causticity | |
| chilliness |
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| APA | Smart Define. (2015). rigorousness thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/rigorousness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigorousness thesaurus" https://smartdefine.org/rigorousness/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, rigorousness thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/rigorousness/thesaurus/synonyms>. |
| MLA | Smart Define. "rigorousness thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/rigorousness/thesaurus/synonyms> |